moore



LEAD PENCIL.

Patented June 28, 1921.

2 SHETS-SHEET l.

Iliff I APPLICATION FILED FEB IT. 1920. 1,382,928.

W. W. MOORE. LEAD PENCIL. "mamon msu ris. n, |920.

Patentd June 28, 1921.

2 SHEETS-SHEET 2 UNTED PATENT OFFICE.

WADE W. MODRE, F PITTSBURG. CALIFORNIA, ASSIGNGR T0 JESSE E. ROACH, 0FOAKLAND, CALIFORNIA.

LEAD-PENCIL.

Specification of Letters Patent.

Patented June 28, 1921.

application filed FebruaryV 17, 1920. Serial No. 359,469.r

. citizen ol' the United States, residing in the city of Pittsburg, inthe count-y of ContraI Costa and State of California, have invented anew and useful Improvement in Lead- Pencils, of which the following isa`speci lication.

My invention relates to improvements m lead pencils of the type whereina permanent body is supplied with extra leads, wherein a tip portion,having a coaxial bore and magazine therein operates in conjunction witha body portion having means for pro jecting a lead through said tipportion.

The primary object of the present invention is to provide an improvedsimplified and economical construction having an increased efficiency.

A further object of the present invention is to provide a new andimproved construction, for pencils of the character described, adapted`to facilitate the transmission of a new or extra lead from the magazineto the writing ti i of the pencil.

A still fart er object of the invention is to provide c new and improvedconstruction easily, economically and readily assembled to reduce thecost of parts and the manufacture of the pencil.

Another ohicct of the improvement is to provide an improved constructionhaving greater stability and fewer operations both in the production andoperation of the pencil.

l accomplish these several objects 'by means of the improved devicedisclosed in the drawings forming a part of the present specificationwherein like characters of reference are used to designate similar partsin vertical longitudinal section, of the bodyl portion only of theencil;

Fig. 6 .is an en arged elevation of the` tip portion only;

Fig. 'is a top plan view of Fig. 6; and Fig. Sas a further enlargedtransverse sectional vlew taken on line 8--8 of Fig. 1 in the directionindicated.

Referring to the drawings the numeral 1 is used to designate in generalthe tip portion of the pencil which comprises a tubular cylindricalportion 2 and a hollow tapered portion 3. The writing tip of the taperedportlon 3 1s provided with an axial bore 4 having a threaded portion 6,the purpose of which will hereinafter be more fully set forth.

t The 'cylindrical portion 2 of the tip rtion 1s k-nnrledor otherwiseroughene as at 7.111 order to facilitate retention of the pencil 1n thehead during the writing process.

lnto the threaded portion 6 of the tapered portieri 4 is screwed oneend-of a coaxial tube 8 which is held in spaced relation with thecylindrical portion 2 of the tip portion 1 by means of a washer orpartition 9 sweated or otherwise Secured within said tip portion l atthe junction, preferably, of the tapered and cylindrical portions 3 and2 respectively, and bored centrally to en age and retain said tube 8asdisclosed in ig. 1 of the drawings.

The spaced relation of the axial bore or tube S to the tip l provides anannular magazine 16 between said tube 8 and the internal walls of the'cylindrical portion 2 ofthe tip portion l, within which magazine may bestored additional or extra leads 14.

he tube 8 is recessed or slotted longitudinelly as at 11 to permit thefrictional engagement of a spring clamp 12. nfiounted upon Said tube 8,between the partition 9 and Writing point, with a lead 14 wit-hin tube 8or axial bore of the tip portion 1 t0 normally prevent longitudinalmovement of said lead 14 within said axial bore.

The upper end of the ma azine 16 is open and substantially flush wit theupper end of the cylindrical portion 2 of the tip portion 1 of the leadpencil. The upper end of saidpol'tion 1 is provided with a neducedexternally threaded portion 21 which is arranged to be engaged by theinternally threaded lower end of a tubular body portion. 22oto c1osesaid magazine 16 and saidbody portlcn` is provided wlth means to projecta lead through the axial bore 4 of the tip portion 1 inv the followingmanner:

The body portion 22 is `provided neer its lower end 'with n bearing 23Within which ie rotatably mounted the lower end of u hollow cylindricalexternally threaded rod 24 hoving u radially disposed longitudinal slotzo therein und o cylindrical member 27 secured in axial alinement to theopposite or upper end of the rod 24, said member 27 being provided withau annuler flange 28 to rotatably engage, the annular recess or shoulder29 in the adjacent or upper end of the tubular body portion 22 andthereb center the upper end of the rod Z4 with Said body portion 22 undat the seme time provide n beziringrr for the upper end of Said rod 24.

The member 27 may be provided with a. chamber 3U within which is secured:in eraser 32 by means of e 'Screw 33, the upper end of the member Q7with eraser 32 being lnclosed by means of e. suitable ornamental. oop3ft in threaded engagement with the upper end of member 2'? as disclosedin Fig. 1 the drawings.

he opposite or lower end of the rod 24 is provided with an externallythreaded portion 36 which extends beyond or below said healing 23 and isengaged by a nut 37 hrwx ing diametricully opposed holes or apertures 38for the reception of`a Spanner or other wrench or tool to screworunscrew the said nut. 3'4" u n the rod QA, and thereby move the hmge 2of the member 27 down onto the annuler recess 29 of the tubular bodyportion 22, thereby effectively, securely and rotatably securin thethreaded rod Qi within the body portion 22. Y

A threaded follower 41 is mounted upon the threaded rod'24 and isprovided with projecting teeth 1Q on one Side thereof to slidnbly engagee plurality of longitudinally disp1 )eed internal groovee 43 Withln thebody portion 2L The follower 41 is also provided with an intel-nulannular roove 44 which is slidably engaged by :i Tif @ded lateralextension 46 of u plungerlibly mounted within the fedi-illydisposejxmfgitndinal slot 26 of the threaded rod 24,`said plunger 47bein arranged substnntizilly coaxial with the ody portion 22 und.viththe tube 8 whereb louoitudinai movement of' saiiplunger 4l; willmove the sume into the coaxial bore or tube S of the tip portion l ofthe pencil. y

The lateral extension 46 of the plunger 47 is slidnbly connected withthe groove 44 of. the follower 4l so that when the rod 24 ,rotuted theradial Slot 26 thereof will,

of course engage the lateral extension 46 of seid plunger i7 :1nd rotatethe same while the follower 41 will not rotate being nonyintzibly butlongitudinally slidohly convhected, through the medium of the teeth 42and grooves 43, with the body portion 22.

rigid and the knob 34 hr member 27 is ro teted which will in turn rotatethe threaded rod 34;` and cause the same to move the slid- :ibly mountedfollower 41 longitudinally Within the body portion of the pencil andthereby actuate the plunger 47 to move intoA the axial bore of the tipportion 1 and project u lead Within said bore beyond the end of thewriting point of the pencil. the spring y clam 12 meanwhile frictionallyengaging the lead to normally prevent movement thereof within said bore.

This friotionul engagement is provided to prevent loss of the leadWithin the bore when ths pencil is inverted.

The novel construction readily facilitates the renewal of e lead withinthe writing point oy elimination of processes now necessary ineimilerupencils heretofore on the market.

Y In tlhepresent instance it is only necessary to unscrew theixidyportion 2'2 from the tip portion 1 and the magazine 16 with its extraleads i4 is readily end instantly accessible. A lead is removed from theannulerkjmagnzine 16 and placed in the adjacentA fr upperend of the boreor tube 8 of the tiki portion l and the body portion 22 is then rewedback onto the Suid tip portion l which operation will clos-ie themagazine to prevent accidental or inadvertent removal of the remainingleeds therefrom.

By? operating the knob 34 or member 27 as hereihhefore described seidrenewed lead will projected through the coaxial bore or tube 8 of thetip portion 1.

In.` constructing this new and novel pencil it is only necessary toscrew thedtube 8 into the threaded portion 6 of the tip portion 1 andseat the partit-ion or Washer 9 therein to center seid tube.

In the body portion it is only necessary to secure the member 2'? to therod 24 by Sii lll-i means of solder or the like, nfterthe eraser l'retaining Screw line been positioned, and

then mount rod 124 within the homing 23 and stability of construction'presents a novel url rangement by menus of which the proefles ofrenewing a. lead or projecting one from the coaxial bore of the pencilis greatly fe cilitated.

The simplxilied construction also permite of an economical assembling ofthe various

